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EP0078277A1 - Chambre d'immersion et de vaporisation - Google Patents

Chambre d'immersion et de vaporisation

Info

Publication number
EP0078277A1
EP0078277A1 EP82901349A EP82901349A EP0078277A1 EP 0078277 A1 EP0078277 A1 EP 0078277A1 EP 82901349 A EP82901349 A EP 82901349A EP 82901349 A EP82901349 A EP 82901349A EP 0078277 A1 EP0078277 A1 EP 0078277A1
Authority
EP
European Patent Office
Prior art keywords
chamber
immersion
evaporation chamber
melt
openings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP82901349A
Other languages
German (de)
English (en)
Inventor
Hans Lustenberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Georg Fischer AG
Original Assignee
Georg Fischer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Georg Fischer AG filed Critical Georg Fischer AG
Publication of EP0078277A1 publication Critical patent/EP0078277A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/02—Dephosphorising or desulfurising
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/10—Making spheroidal graphite cast-iron
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00

Definitions

  • the present invention relates to an immersion evaporation chamber for introducing vaporizable additives into a melt, in particular pure magnesium, into a pig iron, cast iron or steel melt in a treatment vessel for desulfurization and / or for the production of cast iron with spheroidal graphite or vermicular graphite or magnesium-treated Te perguss.
  • the immersion bulb made famous by DAS 2208960 for introducing magnesium into a melt is structurally complicated and complex.
  • the arrangement shown allows only a slight utilization of the stirring effect produced by the kinetic energy of the steam emerging from this immersion bulb, combined with an intensive rinsing effect in the melt.
  • the pressure changes (control vibration test) generated by the controlled evaporation in the chamber and thus also the escaping steam are to be largely reduced.
  • Fer ⁇ ner the diving evaporation chamber should be simple constructive tion in the Kon ⁇ , production and be in use and as necessary as reusable chamber or only when his workedbiluet ⁇ "disposable chamber".
  • a ratio of the total cross sections of the upper and lower opening, or openings _o ⁇ .2, has proven to be optimal
  • a conventional treatment vessel e.g. a transport pan for the melt, which is lined with refractory material, is filled with melt.
  • melt This can be cast iron, pig iron or steel melt.
  • An immersion evaporation chamber according to the invention is immersed in the melt at a predetermined speed.
  • This chamber is connected to a filling and holding tube.
  • the chamber is either immersed in the melt through an opening in the easily removable lid of the treatment vessel, the filling and holding tube being able to be provided with a stop which is seated in a holder on the lid, or with the lid easily attached to the holding tube .
  • the frictional connection of the buoyancy, evaporation and reaction forces acting on the chamber can or only via the immersion device and the cover of the treatment vessel can be reached via the diving device or the cover.
  • the interior of the chamber is filled with pure magnesium, for example.
  • the pure magnesium can be introduced into the chamber in lump or liquid form.
  • the inner and outer shape of the chamber is selected and dimensioned according to flow-technical criteria with regard to steam and bath flow.
  • the chamber is preferably immersed into the melt in an eccentric position with respect to the vertical central axis of the treatment vessel because of the criteria just mentioned and in order to make optimum use of the stirring effect which occurs when the magnesium vapors are mixed with the melt.
  • the eccentric position of the chamber in the treatment vessel and / or the openings arranged eccentrically on the chamber support and reinforce the bath rotation and thus the flushing action and thus the separation of the reaction products, such as e.g. Slag.
  • the openings provided in the chamber wall are arranged on at least two levels with regard to the installation position and can differ in their number and in their total cross-sectional area.
  • the number, size and arrangement of the openings in the chamber wall are selected such that an optimal course of the evaporation of the re-magnesium in the chamber and the reaction of the steam with the melt is ensured. In this way, controlled, metered evaporation of the pure magnesium and thus a reaction process controlled within narrow limits is achieved.
  • the total cross section Q of the opening or openings is preferably smaller than the total cross section Q of the opening or openings in the upper two thirds of the chamber wall.
  • the number and size of the openings and the distance between the opening levels depend on various factors, such as, for example, the amount, the sulfur content and the treatment temperature of the melt to be treated.
  • the chamber is connected to a filling and holding tube which protrudes through the protective cover of the treatment vessel.
  • This tube can be covered with a refractory layer, preferably made of ceramic material, on the outside or inside or on both sides of part or all of the length protruding from the reaction chamber.
  • the vertical axes of the holding or filling tube can coincide or be arranged offset.
  • the holding and / or filler pipe can execute a rotating and / or pulsating movement, whereby three rotating movements and / or one vertical pulsation can be combined.
  • the rotational and / or pulsating movement (s) of the immersion evaporation chamber enables an optimal mixing of the steam emerging from the chamber with the melt and thus the highest possible efficiency with the best possible reproducibility of the melt treatment.
  • the protective cover has a collar-shaped jacket projecting downwards along the outside of the treatment vessel wall.
  • OMPI which serves as a splash guard.
  • One or more outlet openings for vapors that are not absorbed by the melt or that are released by the melt can be provided in the protective cover itself.
  • the length of the jacket must be chosen so that the bottom edge of the jacket covers the top edge of the treatment vessel before the chamber is immersed in the melt.
  • the hood-shaped cover can also be used directly for suction of the above-mentioned vapors and their reaction products with the air, for example MgO, by the above-mentioned outlet opening (s) directly with one or more suction line (s), for example via one or more flexible metal pipes can be connected.
  • the chamber can also be designed as a disposable chamber in such a way that, after the evaporation has ended, the chamber completely or partially detaches from the holder and exits the melt as a unit or disintegrated.
  • the chamber can also have two or more parts be, with a two-part design, a lower part of the container after it has been filled with magnesium is attached to a cover part which is connected to a stem, for example by means of a simple screw cap.
  • a filler pipe of the type described above is superfluous and can be replaced by a simple handle.
  • the chamber is filled with liquid magnesia, e.g. through one or more openings in the wall of the chamber and after the magnesium has solidified, it can be immersed in the melt, because of the more favorable volume-surface ratio of the piece of magnesium solidified in the chamber than in the case of lumpy magnesium, a quieter reaction course can be observed.
  • a finer dosage of the filling weight of the magnesium is possible and the filling tube in the holding handle of the chamber is no longer required.
  • the walls of the chamber can be made of conventional or high-strength refractory materials or combinations of materials
  • the treatment sequence can be increased considerably, since the treatment device is better adapted to the operational conditions with regard to the previously known immersion devices and its handling is simplified .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Removal Of Specific Substances (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

Dans cette chambre d'immersion et de vaporisation pour fonderie en fonctionnement, on prevoit, dans le tiers inferieur du cote du recipient de manutention ainsi que dans les deux tiers superieurs de la paroi interieure, une ouverture. Le nombre, la dimension et la section des ouvertures sont choisis de maniere a ce que la section totale Qu de l'ouverture ou des ouvertures du tiers inferieur est egale ou plus petite que la section totale Qo de l'ouverture ou des ouvertures des deux tiers superieurs. Selon une forme d'execution le rapport Qo/Qu est au moins egal a 2. L'application de cette chambre se concretise en l'incorporation d'additifs vaporisables dans la fonte notamment de magnesium pur dans un recipient de manutention contenant du fer brut, de la fonte ou de l'acier. Le procede convient pour la desulfuration et/ou la fabrication de fonte a graphite spheroidal ou vermicule et la fonte malleable.
EP82901349A 1981-05-08 1982-05-04 Chambre d'immersion et de vaporisation Withdrawn EP0078277A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2990/81A CH656399A5 (de) 1981-05-08 1981-05-08 Tauch-verdampfungskammer.
CH2990/81 1981-05-08

Publications (1)

Publication Number Publication Date
EP0078277A1 true EP0078277A1 (fr) 1983-05-11

Family

ID=4246178

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82901349A Withdrawn EP0078277A1 (fr) 1981-05-08 1982-05-04 Chambre d'immersion et de vaporisation

Country Status (23)

Country Link
US (1) US4496393A (fr)
EP (1) EP0078277A1 (fr)
JP (1) JPS58500667A (fr)
AR (1) AR228491A1 (fr)
AU (1) AU551528B2 (fr)
BR (1) BR8207694A (fr)
CA (1) CA1194698A (fr)
CH (1) CH656399A5 (fr)
DD (1) DD202454A5 (fr)
DK (1) DK4883A (fr)
ES (1) ES511987A0 (fr)
HU (1) HU191461B (fr)
IL (1) IL65587A (fr)
IT (1) IT1151385B (fr)
NO (1) NO830038L (fr)
PH (1) PH19358A (fr)
PL (1) PL236323A1 (fr)
PT (1) PT74800B (fr)
RO (1) RO88051A (fr)
SU (1) SU1232149A3 (fr)
WO (1) WO1982003875A1 (fr)
YU (1) YU89182A (fr)
ZA (1) ZA823161B (fr)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4626244A (en) * 1985-02-01 1986-12-02 Consolidated Controls Corporation Implantable medication infusion device
DK173273B1 (da) * 1989-11-28 2000-06-05 Fischer Ag Georg Magnesiumbehandlingsfremgangsmåde og apparat til udøvelse af denne
IT1248457B (it) * 1991-04-05 1995-01-19 Benet Di Bennati Ettore Metodo e apparecchiatura per il trattamento di bagni metallici mediante un materiale con elevato potenziale di gas o vapore
LU90005B1 (fr) * 1997-01-15 1998-07-16 Wurth Paul Sa Procédé et installation pour le traitement de l'acer en poche
RU2247157C2 (ru) * 2002-06-12 2005-02-27 Сергей Николаевич Чепель Способ ввода реагентов в расплав, перемешивания расплава металла и устройство для его осуществления
US7402276B2 (en) * 2003-07-14 2008-07-22 Cooper Paul V Pump with rotating inlet
US20050013715A1 (en) 2003-07-14 2005-01-20 Cooper Paul V. System for releasing gas into molten metal
US7470392B2 (en) * 2003-07-14 2008-12-30 Cooper Paul V Molten metal pump components
US20070253807A1 (en) 2006-04-28 2007-11-01 Cooper Paul V Gas-transfer foot
US7906068B2 (en) 2003-07-14 2011-03-15 Cooper Paul V Support post system for molten metal pump
US8613884B2 (en) 2007-06-21 2013-12-24 Paul V. Cooper Launder transfer insert and system
US8337746B2 (en) 2007-06-21 2012-12-25 Cooper Paul V Transferring molten metal from one structure to another
US9156087B2 (en) 2007-06-21 2015-10-13 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US8366993B2 (en) 2007-06-21 2013-02-05 Cooper Paul V System and method for degassing molten metal
US9205490B2 (en) 2007-06-21 2015-12-08 Molten Metal Equipment Innovations, Llc Transfer well system and method for making same
US9409232B2 (en) 2007-06-21 2016-08-09 Molten Metal Equipment Innovations, Llc Molten metal transfer vessel and method of construction
US9410744B2 (en) 2010-05-12 2016-08-09 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US9643247B2 (en) 2007-06-21 2017-05-09 Molten Metal Equipment Innovations, Llc Molten metal transfer and degassing system
US8524146B2 (en) 2009-08-07 2013-09-03 Paul V. Cooper Rotary degassers and components therefor
US8444911B2 (en) 2009-08-07 2013-05-21 Paul V. Cooper Shaft and post tensioning device
US10428821B2 (en) 2009-08-07 2019-10-01 Molten Metal Equipment Innovations, Llc Quick submergence molten metal pump
US8535603B2 (en) 2009-08-07 2013-09-17 Paul V. Cooper Rotary degasser and rotor therefor
US8449814B2 (en) * 2009-08-07 2013-05-28 Paul V. Cooper Systems and methods for melting scrap metal
US8714914B2 (en) 2009-09-08 2014-05-06 Paul V. Cooper Molten metal pump filter
US9108244B2 (en) * 2009-09-09 2015-08-18 Paul V. Cooper Immersion heater for molten metal
US9903383B2 (en) 2013-03-13 2018-02-27 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened top
US9011761B2 (en) 2013-03-14 2015-04-21 Paul V. Cooper Ladle with transfer conduit
US10052688B2 (en) 2013-03-15 2018-08-21 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US10465688B2 (en) 2014-07-02 2019-11-05 Molten Metal Equipment Innovations, Llc Coupling and rotor shaft for molten metal devices
US10947980B2 (en) 2015-02-02 2021-03-16 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened blade tips
US10267314B2 (en) 2016-01-13 2019-04-23 Molten Metal Equipment Innovations, Llc Tensioned support shaft and other molten metal devices
US11149747B2 (en) 2017-11-17 2021-10-19 Molten Metal Equipment Innovations, Llc Tensioned support post and other molten metal devices
US11931802B2 (en) 2019-05-17 2024-03-19 Molten Metal Equipment Innovations, Llc Molten metal controlled flow launder
MX2023006967A (es) * 2020-12-17 2023-06-23 Foseco Int Dispositivo giratorio para el tratamiento de metal fundido.
US11873845B2 (en) 2021-05-28 2024-01-16 Molten Metal Equipment Innovations, Llc Molten metal transfer device
US12146508B2 (en) 2022-05-26 2024-11-19 Molten Metal Equipment Innovations, Llc Axial pump and riser

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1168458B (de) * 1961-06-16 1964-04-23 Grafitschmelztiegelfabrik Cosa Tauchglocke zum Einbringen von Legierungen in Metallschmelzen, insbesondere Gusseisen
DE1939140A1 (de) * 1968-08-14 1970-02-19 Allegheny Ludlum Steel Vorrichtung zum Zugeben von Stoffen zu einem Gefaess mit geschmolzenem Metall
DE2208960C3 (de) * 1972-02-25 1982-06-24 Klöckner-Humboldt-Deutz AG, 5000 Köln Tauchgefäß aus feuerfestem Material zum Einbringen von Reinmagnesium in eine Gußeisenschmelze
US3788624A (en) * 1972-06-21 1974-01-29 Bethlehem Steel Corp Immersion bell
US4022444A (en) * 1975-08-25 1977-05-10 Reactive Metals & Alloys Corporation Apparatus for adding mischmetal to molten steel
CH638242A5 (de) * 1978-01-06 1983-09-15 Fischer Ag Georg Verfahren zur entschwefelung von groesseren mengen roheisen-, stahl- oder gusseisen-schmelzen.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8203875A1 *

Also Published As

Publication number Publication date
AR228491A1 (es) 1983-03-15
HU191461B (en) 1987-02-27
CH656399A5 (de) 1986-06-30
SU1232149A3 (ru) 1986-05-15
IT1151385B (it) 1986-12-17
HUT38401A (en) 1986-05-28
PL236323A1 (en) 1983-02-28
JPS58500667A (ja) 1983-04-28
BR8207694A (pt) 1983-04-12
ES8307299A1 (es) 1983-06-16
US4496393A (en) 1985-01-29
YU89182A (en) 1985-04-30
WO1982003875A1 (fr) 1982-11-11
PT74800A (de) 1982-05-01
DK4883D0 (da) 1983-01-07
NO830038L (no) 1983-01-07
IL65587A (en) 1985-12-31
AU551528B2 (en) 1986-05-01
AU8393982A (en) 1982-11-24
CA1194698A (fr) 1985-10-08
DD202454A5 (de) 1983-09-14
IL65587A0 (en) 1982-07-30
PH19358A (en) 1986-04-02
IT8220993A0 (it) 1982-04-29
ES511987A0 (es) 1983-06-16
RO88051B (ro) 1985-10-31
RO88051A (fr) 1985-11-30
ZA823161B (en) 1983-03-30
DK4883A (da) 1983-01-07
PT74800B (de) 1983-10-26

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19821223

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19841001

RIN1 Information on inventor provided before grant (corrected)

Inventor name: LUSTENBERGER, HANS